In the video, available to view below, the bright objects materialize in the sky in the right-hand side of the screen, before moving in formation to the left.

Many questions about the legitimacy of these UFOs are being raised by online commenters and a handful of photographic and special effects experts, who speculate on whether these are digital effects, flares, balloons, helicopters, lanterns or simply, aliens.

The video shows multiple bright balls of light appearing out of nowhere

I am sorry for the quality, it was filmed with a mobile phone

YouTube user Naktis Ireland

Despite the footage being filmed in December, the video was only posted online last week – causing many Internet aficionados to cry foul.

Writing on YouTube, the poster addressed concerns about the shakiness of his UFO video.

"I am sorry for the quality, it was filmed with a mobile phone. Ironically I had a Canon EOS 55D with 300 mm lens at home that could of filmed in 3000x3000 but I was afraid that they would disappear by the time I got my camera as this is a very rare opportunity so instead, used a phone to record as much as possible."

Many questions about the legitimacy of these UFOs are being raised by online

Viewers also questioned the video’s lack of an audio track.

The witness responded, “The only pc software modification I did was to remove the sound as some comments where irrelevant and to cut off the end as it was filming the empty sky.”

The witness also cautiously stated, “I never mentioned aliens. I said they are very bright, strange orbs that are UNIDENTIFIED witch means that I cant even say that they where lanterns because no such detail was seen. Believe what you want to believe, anything is possible.”